55044728 has 8 divisors (see below), whose sum is σ = 103208880. Its totient is φ = 27522360.

The previous prime is 55044719. The next prime is 55044733. The reversal of 55044728 is 82744055.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3440288 + ... + 3440303.

It is an arithmetic number, because the mean of its divisors is an integer number (12901110).

Almost surely, 2^55044728 is an apocalyptic number.

It is an amenable number.

55044728 is a deficient number, since it is larger than the sum of its proper divisors (48164152).

55044728 is a wasteful number, since it uses less digits than its factorization.

55044728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6880597 (or 6880593 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 35.

The square root of 55044728 is about 7419.2134353987. The cubic root of 55044728 is about 380.3983081176.

The spelling of 55044728 in words is "fifty-five million, forty-four thousand, seven hundred twenty-eight".